sorry to be so doff, what is VNC mode ("Virtual Network Computing") and how would i set this up?
That sounds intersting, i did not know that?
Well, if you connect the two together with an ethernet cable or even if they are on the same wireless network, you can download a VNC server on the laptop, and a VNC viewer on the iMac (Leopard has this built in)
I assume you are running Mac on the iMac and not Windows via bootcamp, so:
Connect the two via ethernet cable (or if they are on the same wireless network then that's fine)
On Windows:
Download
tightVNC for the Windows laptop
Click Launch VNC Server in the TightVNC Menu in, Start > All Programs
Double click the TightVNC icon in the taskbar (next to the clock) and tick "Accept Socket Connections" and choose yourself a password.
Also, go to the "Socks" tab and check "Poll Full Screen" - This allows for a faster refresh apparently
Click "Apply" and then "Ok", and hover your mouse over the tightVNC icon in the taskbar. It should give you an IP address.. Take note of this address (e.g 10.0.0.12)
On Mac:
While in Finder, press the Command key+k on your keyboard. This will bring up the Connect to Server window.
Input vnc://computername or vnc://ipaddress where computername (or ipaddress) is the name (or address) of the VNC server you wish to connect to. If the server is using another port besides the default (5900), add a colon and the port number after the computer name (or address).
e.g vnc://10.0.0.12
Click the Connect button.
Enter your password, when prompted.
Let me know how it goes